| Difficult Run to Glen Carbon (Illinois) | 679.61 mi (1,093.72 km) |
| Difficult Run to Glen Cove (New York) | 239.50 mi (385.43 km) |
| Difficult Run to Glen Ellyn (Illinois) | 599.51 mi (964.82 km) |
| Difficult Run to Glen Rock (New Jersey) | 222.17 mi (357.55 km) |
| Difficult Run to Glendale (Arizona) | 1,966.10 mi (3,164.13 km) |
| Difficult Run to Glendale (California) | 2,274.54 mi (3,660.52 km) |
| Difficult Run to Glendale (Wisconsin) | 623.49 mi (1,003.41 km) |
| Difficult Run to Glendale Heights (Illinois) | 601.33 mi (967.74 km) |
| Difficult Run to Glendora (California) | 2,253.99 mi (3,627.44 km) |
| Difficult Run to Glenmont (Maryland) | 19.88 mi (32.00 km) |
| Difficult Run to Glenn Dale (Maryland) | 29.73 mi (47.84 km) |
| Difficult Run to Glenn Heights (Texas) | 1,175.90 mi (1,892.43 km) |
| Difficult Run to Glenpool (Oklahoma) | 1,041.95 mi (1,676.86 km) |
| Difficult Run to Glens Falls (New York) | 360.39 mi (579.99 km) |
| Difficult Run to Glenvar Heights (Florida) | 927.70 mi (1,492.99 km) |
